import java.util.Scanner;

public class Sum
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
long sum = 0;
long number = 0;
do 
{
    System.out.print("input numbers:");
    number = Long.parseLong(scanner.nextLine());
    sum += number;
}
while(number != 0);
System.out.println("sum:"+sum);
}
} 